Bearing for column-turning machines.



J. BUFFELBN.

BEARING FOB COLUMN TURNING MAOHINES.

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J. BUPFELBN.

BEARING Pon GOLUMN TURNING MAonINEs.

AIPLIOATION FILED 00T. 19, 190B.

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UNITED STATES PATENT OFFICE..

JOHN BUFFELEN, OF TAGOMA, WASHINGTON.

BEARING FOR COLUMN-TURNING MACHINES'.

Original application led August 31, 1906, Serial No. 332,819. Divided and this application `filed October' 19, 1908.

Patented March 30, 1909.

Serial No. 468,567.

To all whom it may concern:

Be it known that I, JOHN BUFFELEN, a citizen of the United States of America, residingat Tacoma, in the county of Pierce and State of Washington, have invented certain new and useful' Improvements in Bearings for Column-Turning Machines, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to devices for supporting a rotating column timber in a lathe and has for its objects to provide suitable means whereby the column may be placed in position in the lathe or removed therefrom without having to pass it endwise through the bearings, thus saving much time and labor inhandlin thercolumn timbers. I attain this object y the devices and mechanisms illustratedin the accompanying drawingBs, in whichigure l is a vertical longitudinal section ofa'standard having a timber secured therein; Fig. 2 is a similar view showing the positions ofthe arts when the column timber is to'be placed) in or removed from the lathe; Fi 3 1s a vertical cross-section of the standar Fig. 4 is an end view thereof; Fig. 5 is a plan thereof when the parts are in the positions shown in Fig.' 2; and Fig.' 6 is a similar view when the parts are in the positions shown nFig. 1.

Similar numerals of reference refer to similar Tr'xarts throu hout the several views.

e standar 1` supportinfrmy improved bearing is made hollow as plainly shown in the drawin s. The top ofthe standard 1 is smooth an flat and at a level with the axis of rotation ofther column, and has a central hole 2 therein. Two countersunk or dovetail rooves 3 extend across the top of the stan ard lat right angles to the axis of rotation of the column,` and areadapted to receive the tongues 4 formed on lower edges of the sliding tops 5. Semi-circular flanges 6 project inward from the sides of the standardl and surround semi-circularopenings 7 therethrough, the said flanges 6 being adapted to enter into the end cavities of the cylindrical column holder (Fig. 3) and the said openings 74 being large enough to allow the square timber out ofwhich the column is to be turned to rotate onits axis without touchingthe standardl. Apairofbearin plates 8" are removably and adjustably bo ted to each oftheinnersides of' the' standardI 1 (Figs. l, 2 and 3), the bearing edges of said lates being concentric with the semi-circular anges 6 and spaced therefrom so as to bear below the outer surface of the cylindrical lcolumn holder, which is supported from downward movement thereby, and which is kept from upward'movement, under the tension ofthe belt, bythe'said semi-circular flangesk (i which enter and en' age in the circular cavi'- tiesin its ends. The central axis of the iianges 6, openings 7.'and bearingsurfaces of the plates 8' is the axis of rotationofthecolumn holder andlies in the plane of the top of standard' 1.

As indicated above, the standard is provided with a air of sliding tops 5. These tops are simi ar and are adapted to slide horizontally on the top of the standard 1`, the dovetail tongues 4 thereof fitting in the parallel grooves 3 in the standard. In their closed osition (Figs. 1 and 6) the tops meet vertica ly over the central axis of rotation of the column while in their open position (Figs. 2 and 5) they are withdrawn from each other so as to leave a free space over the column holder. 4The tops 5 are made hollow with a central belt space 9 at their inner ends, and have their sides cut away (at the inner ends) at 10 (Fi, 2) to iit around the cylindrical column' ho der and to allow the square timber ofthe column to rotate without touching it. The upper edges of the two tops 5 meet' above the Vcenter" of the column and are beveledoif'very slightly in o "osito directions (Fig. 6). The parts 1() o V"the sides of the sliding tops 5 complete the bearings for the column holder and act in conjunctionwith the flanges 6 and plates 8 above described. The' sliding tos 5 are pressed into place by means of the evers 11 which are each pivoted'at 12 to the standard 1 and are both connected by the linl 13 to the foot lever 14, which is pivoted to th'e base of the standard 1. The levers 11 are arranged in the centralplane ofthe standl ard and are shaped'so as to p'ass from the outside into the inside thereof, the link 13 actingpractically'vertically under the center oint' ofthe standard'. Thefoot lever 14 is ent'near its end' so that the footboard 15 thereof is outside of the standard l'. Thus by stepping'onthe board15`both the levers 11 are moved sol that theirupper outer ends are ressed toward thefcentralaXis of'the ma'c ine: TlieseV upper outer' ends of the levers 11 engage the ends ofthe sliding tops 5 in the center thereof to press them together and thus complete the bearing for the column holder. When the lever 14 is released the tops 5 may be moved outward by hand, by weight, or by spring.

The column holder' consists of a cylindrical body 16 having a shaped axial hole therein adapted to receive the column. This body 16 is constructed in sectors, suitably hinged together, so that by opening said sectors access may be had to the shaped hole for the column. The column holder is supported at its ends by the plates 8 and extends across the space between the sides of the standard 1. It is rotated by a belt 17 which engages its central part and which passes through the openings 2 and 9 in the standard 1 and sliding tops 5. The cylindrical column holder 16 is provided at each end with a cavity 18 into which the semi-circular iianges 6 on the standard 1 i'it. This bearing is especially intended for use on my porch column turning and boring machine for which I have made application for Letters Patent (Serial N 0. 332819).

Having described my invention, what I claim is:

1. In a bearing for column-turning machines, the combination of a supporting standard with a semi-circular bearing formed therein two similar complementary castings, sliding on said standard in opposite directions on a horizontal plane, transversely of the axis ofsaid bearing, and each provided with a com lementary quadrant bearing completing the circle of said bearing; two simi arbut opposite levers pivoted to said standard and engaging said sliding castings to press them together; and a foot-lever engaging both of said levers whereby said levers are actuated. 2. In a bearing for column-turning machines, -the combination of a supporting standard with two parallel semi-circular bearings formed therein with free space therebetween; a rotating cylindrical body supported by said bearings and extending across the free space therebetween, and being engaged and rotated by a belt engaging it in the space between the bearin s; two similar complementary castings, sli ing on said standard in opposite directions on a horizontal lane, transversely of the axis of said bearings, and each provided with two complementary quadrant bearings completmg the circles of said bearings, and having free s ace therebetween; two similar but opposite evers ivoted to said standard and enga ing said siding castings to press them toget er; and a foot lever engaging both of said levers whereby said levers are actuated to hold said quadrant bearings in contact with said rotating cylindrical body.

3. In a bearing for column-turning machines, the combination of a supporting standard with two parallel semi-circular 'bearings formed therein with free space therebetween; a rotating cylindrical body supported by said bearings and extending across the free space therebetween, and being engaged and rotated by a belt engaging it in the space between the bearings; guideways formed on said standard on each side of the axis of said pulley and at right angles thereto and being parallel with the dividing plane of said semi-circular bearings; two castings sliding in said guideways and each having two quadrant bearings formed on the sides thereof, the bearings of one casting be; ing complementary to the opposite bearings on the other casting, to form two semi-circular bearings completing the bearings with said semi-circular bearings in the standard; two similar but opposite levers pivoted to said standard and engaging said sliding castings to press them together so that the quadrant bearings will be concentric with said fixed semi-circular bearings; and a foot-lever engaging both of said levers whereby said levers are actuated.

4. In a bearing for column turning machines, the combination of a supporting standard with a semi-circular bearing formed therein; guideways formed in the upper surface of said standard on each side of said bearing therein; and two castin s mounted in said guideways to complete t e circle of the bearing, said castings being adapted to be slid away from the bearing and from each other to permit the removal therebetween of the object in the bearing.

5. In a bearing for column turning machines, the combination of a supporting standard with semi-circular bearings formed therein; guideways formed in the upper surface of said standard on each side of said bearings therein; and two complementary castings mounted in said guideways and each provided with complementary quadrant bearings completin the circles of said bearings, said castings eing adapted to be slid away from the bearings and from each other to permit the removal therebetween of the object in the bearing.

6. In a bearing for column-turning machines, the combination of a supporting standard with parallel co-axial semi-circular bearings formed in its two sides, with beltspace therebetween, said bearings being joined by the u per portion of said standard guideways ormed in the u per portion of said standard on each side ol) the axis of said bearings and at right angles thereto; and two complementary castings mounted in said guideways and each provided with two parallel co-axial quadrant bearings, complementary to each other and in the same vertical planes with the semi-circular bearings, said quadrant bearings completing the circles of the two bearings, with belt-spee therebetween, and seid castings being adept ed to be slid in the guideweys away from eeeh other and Jfrom the bearings to permit the removal therebetween of the object in the bearings.

7. ln a bearing for column-turning maiehines, the combination of e supporting stand ard with parallel 5o-axial semi-circuler bearings formed in its two sides, with beltspace therebetween, said bearings being joined by the u per portion of said standard; guideways orlned in the upper portion of said standard on each side of the exis of said bearings and et right angles thereto; two complementary castings mounted in said guideways and each provided with two parallel eo-exiel quadrant bearings, eoinplementary to each other and in the Senne` Vertieal planes with the Semi-circuler beerings, seid uedrant bearings completing the eireles ol` lie two bearings, with beltespaee there between, end sind castings beingr adapted to be slid in the guideweys away from each other and from the bearing to erlnit the removal therebetween of the liody in the bearings; and a cylindrical body journaled in both ol seid. bearings and extending therebetween and adapted to he engaged and rotated by a belt between said bearings.

In. testimonyY whereof I fnlix my signature in presenee of two witnesses.

JOHN BUFFELEN Witnesses:

B. P. PlEReE, A. M. RICHARDs 

